Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

62.1°F

Measurement Time: Wednesday, September 2, 2026, 10:45 AM PDT

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Colfax Spring, CA; Mather, CA; Harden Flat, CA

Tuolumne River

Station Name: TUOLUMNE R BL EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,369 feet

Nearest Address:
Cherry Lake Rd
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.8815908, -119.9701824

Nearby Water Temperatures

Tuolumne River, Groveland, CA (1.3 mi)
Cherry Creek, Groveland, CA (6.6 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Tuolumne River, Groveland, CA (17.1 mi)
Merced River, Yosemite Valley, CA (24.7 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (51.3 mi)
Deadman Creek, Mammoth Lakes, CA (57 mi)
Hot Creek, Mammoth Lakes, CA (62.8 mi)
Hot Creek, Mammoth Lakes, CA (63.4 mi)
San Joaquin River, Friant, CA (63.4 mi)
Hot Creek, Mammoth Lakes, CA (64.6 mi)
Trout Creek, South Lake Tahoe, CA (71.7 mi)
Upper Truckee River, South Lake Tahoe, CA (71.9 mi)
General Creek, Tahoma, CA (81.3 mi)
South Fork American River, Rescue, CA (82.9 mi)

Weather for Groveland, California

Current Weather

75°F
Clear
Clear
39%
WSW 6 mph
48°F

Weather Forecast

Mostly Clear then Patchy Smoke
Tonight
51°F - Mostly Clear then Patchy Smoke
Haze then Sunny
Thursday
79°F - Haze then Sunny
Partly Cloudy
Thursday Night
53°F - Partly Cloudy
Mostly Sunny
Friday
77°F - Mostly Sunny
Mostly Clear
Friday Night
53°F - Mostly Clear
Sunny
Saturday
81°F - Sunny
Mostly Clear
Saturday Night
56°F - Mostly Clear
Sunny
Sunday
80°F - Sunny
Mostly Clear
Sunday Night
55°F - Mostly Clear
Sunny
Labor Day
82°F - Sunny
Mostly Clear
Monday Night
58°F - Mostly Clear
Mostly Sunny then Slight Chance Light Rain
Tuesday
85°F - Mostly Sunny then Slight Chance Light Rain
Slight Chance Light Rain
Tuesday Night
60°F - Slight Chance Light Rain
Slight Chance Light Rain
Wednesday
88°F - Slight Chance Light Rain

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:19 PM
Moon Transit: 5:01 AM
Moonset: 12:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
12:50 AM - 3:20 PM

Minor Periods

9:49 PM - 11:19 PM
12:05 AM - 1:35 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:19 PM
Moon Transit: 5:01 AM
Moonset: 12:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
12:50 AM - 3:20 PM

Minor Periods

9:49 PM - 11:19 PM
12:05 AM - 1:35 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:00 PM
Sunset: 7:26 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:06 PM
Moon Transit: 5:58 AM
Moonset: 1:47 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
1:48 PM - 4:18 PM

Minor Periods

12:00 AM - 12:00 AM
1:17 PM - 2:47 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:00 PM
Sunset: 7:26 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:06 PM
Moon Transit: 5:58 AM
Moonset: 1:47 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
1:48 PM - 4:18 PM

Minor Periods

12:00 AM - 12:00 AM
1:17 PM - 2:47 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:58 AM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:06 AM
Moon Transit: 7:00 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
2:50 PM - 5:20 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:58 AM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:06 AM
Moon Transit: 7:00 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
2:50 PM - 5:20 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:05 AM
Moon Transit: 8:02 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:32 AM - 10:02 AM
3:53 PM - 6:23 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:05 AM
Moon Transit: 8:02 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:32 AM - 10:02 AM
3:53 PM - 6:23 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:58 AM
Sunset: 7:21 PM
Daylight: 12 hrs 47 mins
Moonrise: 1:12 AM
Moon Transit: 9:04 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
4:55 PM - 7:25 PM

Minor Periods

4:19 PM - 5:49 PM
12:42 AM - 2:12 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:58 AM
Sunset: 7:21 PM
Daylight: 12 hrs 47 mins
Moonrise: 1:12 AM
Moon Transit: 9:04 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
4:55 PM - 7:25 PM

Minor Periods

4:19 PM - 5:49 PM
12:42 AM - 2:12 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:57 AM
Sunset: 7:20 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:27 AM
Moon Transit: 10:04 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:53 PM - 8:23 PM
9:34 AM - 12:04 AM

Minor Periods

5:01 PM - 6:31 PM
1:57 AM - 3:27 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:57 AM
Sunset: 7:20 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:27 AM
Moon Transit: 10:04 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:53 PM - 8:23 PM
9:34 AM - 12:04 AM

Minor Periods

5:01 PM - 6:31 PM
1:57 AM - 3:27 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:57 AM
Sunset: 7:18 PM
Daylight: 12 hrs 42 mins
Moonrise: 3:41 AM
Moon Transit: 11:00 AM
Moonset: 6:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

6:47 PM - 9:17 PM
10:30 AM - 1:00 PM

Minor Periods

5:36 PM - 7:06 PM
3:11 AM - 4:41 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:57 AM
Sunset: 7:18 PM
Daylight: 12 hrs 42 mins
Moonrise: 3:41 AM
Moon Transit: 11:00 AM
Moonset: 6:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

6:47 PM - 9:17 PM
10:30 AM - 1:00 PM

Minor Periods

5:36 PM - 7:06 PM
3:11 AM - 4:41 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 12:57 AM
Sunset: 7:17 PM
Daylight: 12 hrs 40 mins
Moonrise: 4:55 AM
Moon Transit: 11:51 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

7:37 PM - 10:07 PM
11:21 AM - 1:51 PM

Minor Periods

6:05 PM - 7:35 PM
4:25 AM - 5:55 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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